Implement two-dimensional Radar / Polar series type for WPF / Silverlight.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

RadChart should support 3D Surface Series Type.

This feature is now available as part of the ChartView control since R3 2016 Official release. Refer to the link below for more information.
http://docs.telerik.com/devtools/wpf/controls/radchartview3d/series/surfaceseries3d.html

Implement logarithmic X axis in RadChart.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

On data change RadChart should redraw only the series items that are actually changed, and not the whole series.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Implement two-dimensional Funnel series type for WPF / Silverlight.

Available in R3 2017 Official Release Version.

Additional functionality for creating labels and flags over the annotation is needed.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

When you make the window very small in height and then revert it back to normal size the Pie connectors are gone.

Track values of current mouse cursor X position.
Can be seen here: 
http://www.google.com/finance?q=INDEXDJX:.DJI,INDEXSP:.INX,INDEXNASDAQ:.IXIC
and here:
http://people.iola.dk/olau/flot/examples/tracking.html

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView (TrackBallBehavior & CrosshairBehavior).

Chart - properties are not bound correctly when chart is in DataTemplate.

Implement pyramid series type in RadChart.

Manhattan Bar 3D Series Type (with support for real Z axis)

Decline reason: You can use the new RadChartView3D BarSeries3D.
http://docs.telerik.com/devtools/wpf/controls/radchartview3d/series/barseries3d

System.Windows.Data Warning: 4 : 
Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Telerik.Windows.Controls.Charting.ChartLegend', AncestorLevel='1''. BindingExpression:Path=LegendItemMarkerShape; DataItem=null; targ

The user needs to replace the TextBlock with a CheckBox.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView (axes have a LabelTemplate property).

Currently the axis labels are rotated around their center. The rotated labels top edge should be aligned with the center of the corresponding data point (e.g. bar).

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Customers request that the chart show one additional point on the left and one additional on the right. This way RadChart creates a nicer illusion of a zoomed in graph.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Provide the ability to align all labels to the left or right at a specified margin from the pie chart.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Chart: SeriesMappings are not associated with the corresponding ChartArea on update. THis happens only in non-default layout scenarios.

Support for multiple X axes on the same chart area.

eg: Graphing the amount of products sold, per category, as a bar chart
+ a line chart showing the cumulative total of products sold over the past year.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

No exception, but series are not added.